Effect of Gas on Burst Proneness and Energy Dissipation of Loaded Coal: An Experimental Study Using a Novel Gas-Solid Coupling Loading Apparatus

Figure 12

Energy evolution curve of gassy coal during loading and unloading. (a) Coal sample without gas pressure. (b) Coal sample with 1 MPa gas pressure. (c) Coal sample with 2 MPa gas pressure.

(a)

(b)

(c)